Founded in 1576 under viceroy Martín Enríquez de Almanza, León sits at 1,815m on the flat farmland of Guanajuato's Bajío, a colonial town grown into Mexico's fourth-largest municipality. Leather runs through everything here: the city produces an estimated 70% of Mexico's shoes, and generations of tannery workers earned the nickname 'panza verde' — green belly — for the dye stains of the trade. Emperor Maximilian's 1864 visit left a lighter mark than most royal tours: one of Mexico's earliest public hot-air balloon displays, staged by the Alemán brothers.
León barely changes season: around 20°C most of the year.
Rain is spread through the year — about 549 mm in total, from 146 mm in August down to 1 mm in March — so no single month is a washout.
Wind is rarely an issue; most months sit between calm and a light breeze. Air quality is worth watching: May averages an AQI of 58, while September clears to 37.
Days stretch to about 13.3 hours of light in June and shrink to 10.7 in December — something to weigh if you work to a fixed timezone.
For what you're after, the best months in León are April – June. Expect fast internet (149 Mbps) and a moderate cost of living (about €1050 a month).
Affiliate links: if you book through them I earn a small commission, at no extra cost to you.